US3086044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing complex diesters of a dibasic acid with a diol and an excess of a monohydric alcohol
Assignee: Cities Service Research and Development Co
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Filing: 1960-05-27
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Granted: 1963-04-16
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Expires: 1980-05-27
Abstract
No abstract record available.
Inventors
- 👤 Paul M Kerschner
- 👤 Bertrand W Greenwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:57
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/08; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/081
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN A METHOD OF PREPARING SYNTHETIC LUBRICANTS WHEREIN A DIACID OF NOT MORE THAN 20 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC ETHER, THIOETHER AND ORGANOMETALLIC DIACIDS, IS REACTED WITH A DIOL OF FROM 2 TO 20 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, ETHER AND THIOETHER DIOLS, IN A MOLAR RATIO OF FROM 1.5:1 TO 1:1, AND THAT REACTION PRODUCT IS REACTED WITH A CHAIN TERMINATING ALIPHATIC MONOALCOHOL OF FROM 2 TO 20 CARBON ATOMS, THE IMPROVEMENT COMPRISING USING AN AMOUNT OF MONOALCOHOL IN THE SECOND REACTION WHICH IS AT LEAST 100% GREATER THAN THAT AMOUNT OF MONOALCOHOL REQUIRED TO REACT WITH ALL THE RESIDUAL ACID GROUPS PRESENT IN THE DIACID-DIOL PRODUCT.
Claim 2
Dependent Claim
117 words
IN A METHOD OF PREPARING SYNTHETIC LUBRICANTS WHEREIN A DIACID OF NOT MORE THAN 20 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC ETHER, THIOETHER AND ORGANOMETALLIC DIACIDS, IS REACTED WITH A DIOL OF FROM 2 TO 20 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, ETHER AND THIOETHER DIOLS, IN A MOLAR RATIO OF FROM 1.5:1 TO 1:1, AND THAT REACTION PRODUCT IS REACTED WITH A CHAIN TERMINATING ALIPHATIC MONOALCOHOL OF FROM 2 TO 20 CARBON ATOMS, THE IMPROVEMENT COMPRISING USING AN AMOUNT OF MONOALCOHOL IN THE SECOND REACTION WHICH IS AT LEAST 100% GREATER THAN THAT AMOUNT OF MONOALCOHOL REQUIRED TO REACT WITH ALL THE RESIDUAL ACID GROUPS PRESENT IN THE DIACID-DIOL PRODUCT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |